Rock-breaker.



No. 757,004. PATENTED APR. 12, 1904;

w. WILD.

ROGK BREAKER. APPLICATION IILED OOT. 27, 1902.

N0 MODEL. 2 SHEETS-SHEET 1.

4 a? 11 .Mlu

PATENTED APR. 12, 1904.

W. E. WILD. -ROGK' BREAKER.

UNITED STATES Patented April 12, 1904.

ATENT FFICE.

WILLIAM E. WILD, OF DENVER, COLORADO.

ROCK-BREAKER.

SPECIFICATION forming part of Letters Patent No. 757,004, dated. April 12, 1904. Application filed October 27, 1902. Serial No. 128,944. (No model.)

' To alZ whmn it may concern:

Be it known that I, WILLIAM E. WILD, a citizen of the United States of America, residing at Denver, in the county ofArapahoe and State of Colorado, have invented certain new and useful Improvements in Rock-Breakers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in rock-breakers; and the objects of my invention are, first, to provide a rock-breaker having a slidably-adjustable fixed jaw; second, to provide arock-breaker themovable jaw of which makes three impingements on the rock at each revolution of the driving-shaft; third, to provide a rock-breaker having jaws of two different rock-gripping angles; fourth, to provide a rock-breaker having a simple and inexpensive form of breaking-block; fifth, to provide a collapsible or knockdown rock-breaker. I attain these objects by the mechanism illustrated in the accompanying drawings, .in which Figure 1 designates a side elevation of my improved rock-breaker. Fig. 2 represents a longitudinal section of my improved rock- 7 breaker.

Fig. 3 represents a plan view of Figs. 1 and 2. Fig. 4 represents a perspective view of the adjustable head-block that supports the fixed jaw- Fig. 5 represents a perspective view of one of the jaws. Fig. 6

is a perspective view of the actuating-beam.

Fig. 7 is a perspective view of the abutment block. Fig. 8 is a perspective viewof the breaking-block, and Fig. 9 is a perspective view of one of the sides of my improved rockbreaker.

Similar numerals of reference refer to similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates one of the sides of the rock-breaker, and the numeral 2 the opposite side. sides are provided with flanges 3 and 4, which form the foundation-base of each side. Each These side is independent of the other. The sides at the end 5, which I term the rearend, are united to an independent block 6, which is provided with slots 7 and 8, into which the ends of the sides extend. The rear-end block 6 extends beyond the sides, and lugs 8, 9, 10, and 11 are formed at its corners, through which yoke-bolts 11 and 12 extend. These bolts extend horizontally along the outside of the top and bottom sides, passing through lugs 13, 14, 15, and 16 and through the rib 17, which confine them in position.

The bolt-holes in the lugs 15 and 16 at the ends of the sides slant off into slots 18 and 19, that extend into the sides from the inside, as shown in Fig. 9, thus making clearance for the yoke of the bolts, which is a curved yoke portion that extends in a horizontal plane around the head end of the rock-breaker from one side to the other. Slideways 20, 21, 22, and 23 are also formed parallel with the boltslots in the inside of each side from and extending for a short distance from the head ends of the sides along them.

A head-end block 23 fits loosely between the side frames of the rock-breaker at its head end, the sides of which are provided with projecting guide-lugs 24, 25, 26, and 27, which extend loosely and slidably into the guideways in the inside of the side frames. In the outer ends of the guide-lugs and across the outer end of the fixed head-end block semicircular grooves 27 and 28 are formed, in which the yoke of the bolts rests. The inner face of the fixed headend block is divided into two surfaces of different pitches, which extend rearward from the lower edge of the block toward its top, making the block wedge-shaped. A jaw 29, which is formed with two angular portions 30 and 31, which are made of the same pitch as the face of the jaw-block, is fitted to restagainst the face of the jaw-block. Overhanging lip portions 32 and 33 are formed at the top and bottom of the face of the head-end block. The lip 32 forms astep for the lower edge of the jaw to rest against, while the lip 33 overhangs the top edge, and a wedge or key 34 is driven between it and the jaw and keys to place the block.

Transversely' across the rear ends of the side frames 1 place a shaft 35, which I journal in boxes 36. This shaft extends beyond the boxes of the sides, and a fly-wheel 37 is mounted on one end of the shaft, and a fly-wheel and driving-wheel 38 are mounted on the opposite end of the shaft. An eccentric portion 39 or crank-pin is formed on the shaft between the sides, upon which is pivotally mounted an arm 39, which 1 term the actuating-arm.

A half-box 40 is fitted in an aperture 41 in the top of the arm, through which the shaft passes, and a half-box 42 is fitted in the bottom of the aperture and supports the shaft. A key 43 is placed transversely through the top of the arm in a keyway 44 and is arranged to adjust the box vertically to form a suitable bearing between it and the top of the aperture. The lower portion of the edge of the arm 39*, that faces the rear end of the block, is provided with a box 45, in which one end of an abutment-lever 46 is pivotally inserted. The opposite end of this abutment-lever is pivotally supported in a breaking-block 46, which comprises a rectangular block portion 47, which extends loosely into a recess 47 in the rear-end block 6, which is made deep enough to accommodate it by a rearward lug extension 48, formed on the rear-end block, into which the recess extends. A hole 48 is made through the shell of the, lug into the recess within it. A flanged portion 49 is formed integral with the square portion of the breaking-block, which rests against the inner side of the rear-end block.

The driving-shaft 35 is illustrated with its crank-pin at the center of its downward movement, and when in this position the abutmentlever46 occupies a downward inclination from the breakingblock to the actuating-arm. When, however, the crank-pin of the shaft is at the center of its highest movement, the lever stands horizontally level between its pivotal centers. On the opposite side edge of the actuating-arm a semicircular bearingrecess 50 is formed, in which a bearing-ring 51 is seated. An arm 52, which 1 term a walking beam, is pivotally mounted on a shaft 53. This shaft is supported in boxes 54 and 55, which are adjustably supported in rectangular slideways 55 and 56, formed in the side frames. These slideways are made of suflicient width to form substantial bearings for the boxes by laterally-extending lugs 57 and 58, which are formed on the outside of the side frames. A tapering gib-key 59 is arranged to pass through the lugs in contact with the top of the boxes to take up the wear of the boxes. A bolt 60 is secured to the gib and to a rib 61 and is arranged to adjust the position of the gi'b-key.

The walking-beam extends rearward from the shaft 53, and at its end a semicircular knuckle-bearing 62 is formed, on which is fitted a steel bearing-ring 63, which fits into the bearing-ring 51 in the actuating-arm. This end of the walking-beam is thus connected by a knuckle-joint with the actuating-arm. The opposite end of the walking-beam comprises an angular jaw-face of two different pitches. The top face inclines from the top edge of the walking-beam downward and at a diverging angle away from the pivotal shaft 53 to a point about central of the length of the face where it intersects the lower inclined face,which converges from the point of intersection with the upper face toward the pivotal shaft.

An angular rock-breaking jaw 64, having two rock-breaking faces of difiierent pitches and made of suitable material, is formed to register with and rest against the angled face of the walking-beam. A projecting lip 65 at the bottom of the face is provided with an inward and downward inclined surface and forms a step for the jaw to rest on, and an overhanging lip 66 is formed at the top. A wedge 67 is driven between the top of the jaw and the lip and keys the jaw to the angled face of the walking-beam.

A rod 67 is pivotally secured to the lower end of the walking-beam and extends through the rear end plate. A nut 68 is threaded to the end of the rod. A cupped washer 69 is placed on the rod inside of the nut, and a coiled spring 69 is placed on the rod to bear expansivelybetween the rear-end block and washer.

The jaws of the head-end block and of the walking-beam are preferably vertically ribbed in alternate order, so that the ribs of one jaw register opposite the spaces between the ribs of the opposite jaw. The angles of the rockbreaking faces of the jaws incline toward each other and form-a V-shaped opening from the top down, the upper portion forming a suitable opening between them for the entrance of large pieces of rock. From the center of their lengths, however, the angle of each changes. The angle is, however, still inclined, but steeper, so that the lower portions of the jaws form a narrow wedge-space between them, the lower end being narrower than the top end. The fixed jaw can be adjustably moved toward or away from the movable jaw by loosening or tightening the nuts of the yoke-bolts 11 12, which either draws the head-end block toward the walking-beam and its jaw 64 or allows it to be moved back away from the jaw and the walking-beam by the binding pressure of ore between the jaws. The inner side of each of the side frames on each side of the jaws is provided with tapering vertically-disposed dovetailed'recesses 7 O and 71, in which are removably fitted the plates 72 and 73, which I term cheek-plates. These plates project up close against the edges of the jaws and receive the wear of the movement of the jaws and of the rock.

The operation of my improved rock-breaker is as follows: The shaft 35 is rotated by a belt, which extends from the pulley to a source of power. As the shaft rotates the crank-pin lifts the actuating-arm, which is moved toward the jaws by the upward movement of the abutment-lever 4:6. This movement raises the adjacent end of the walking-beam, which has a bearing in the actuating-arms, and moves the top of the movable jaw forward toward the fixed jaw and moves the bottom of the movable jaw away from the fixed jaw. At the same time the center of the jaw at the apex of its two angular faces is moved against the rock by the sliding movement of the walking-beam on its shaft in the boxes in the slideways 54 and 55 of the side frames, thus giving an impingement or contact against the rock at the apex of the angles of the jaws at the same time the upper portion of the jaw impinges it. After the crank-pin passes its top center and moves through its downstroke the top end of the jaw and its apex is moved away from the rock and the fixed jaw, while the lower portion is moved towardit and impinges the rock between the lower and narrow angles of the aws.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is"

1. In a rock-breaker, the combination with the sides and rear-end blockof a shaft mounted in said side frames havinga crank portion between said sides, an arm mounted on said crank portion of said shaft between said side frames, a shaft slidably journaled in said side frames, a walking-beam mounted on said shaft intermediate of its ends, a rock-breaking jaw removably secured on one end of said walkingbeam, aknuckle bearing between the opposite end of said walking-beam and said arm, a headend block slidably mounted between said side frames adjacent to the rock-breaking jaw of said walking-beam, a rock-breaking jaw removably secured to said head-end block, and

adjustable yoke-bolts adjustably secured to,

said sides and rear-end block and arranged in holding contact with said head-end block, substantially as described.

2. In a rock-breaker, the combination with the sides, the fixed rear-end block and the yokebolts extending through said rear-end block, slots in the inner sides of said side arranged to permit adjustable movement of the yoke portion of said yoke-bolts, guideway-recesses in thehead end of the inner sides of said sides, a head-end block fitting slidably between said sides and provided with projecting guidewaylugs fitting slidably in said guideway-recesses in said sides and provided with a recess in its outer end in which the yoke portion of said yoke-bolts rests, substantially as described.

3.- In a rock-breaker, the combination with the sides, the rear-end blocks, the adjustable head end, fixed jaw-blocks and the yoke-bolts, with the driving crank-shaft provided with suitable fly-wheels and driving-pulley, with the actuating-arm pivotally mounted on said crank-shaft, the walking-beam slidably and pivotally mounted in said sides and arranged with one end opposing said head-end fixedjaw block, rock-breaking jaws removably secured to the opposing faces of said head-end blocks and said walking-beam and arranged to form a V-shaped opening between them of two different tapering pitches, the top of each tapering portion being the widest, vertical dovetailed, tapering recesses in the sides of said sides opposite said jaws, and tapering cheek-plates removably secured in said tapering recesses, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM E. WVILD.

Witnesses:

Gr. SARGENT ELLIOTT, Bnssrn THOMPSON. 

